1. You control Jace, the Mind Sculptor. On your turn, you activate one of his abilities. You then cast Jace, the Mind Sculptor. You now control two Planeswalkers with the Planeswalker type Jace. You choose Jace, the Mind Sculptor to remain on the battlefield. Jace, the Mind Sculptor is put into your graveyard. You can activate one of the loyalty abilities of Jace, the Mind Sculptor.

2. Your opponent controls Jace, the Mind Sculptor. You cast Jace, the Mind Sculptor. Both permanents may stay on the battlefield as long as they're controlled by different players.